Investigation of an Electrochemical Method for Separation of Copper, Indium, and Gallium from Pretreated CIGS Solar Cell Waste Materials

Figure 9

Electrochemical separation of indium from a solution prepared by directly dissolving real waste material in 3 M HCl with an addition of H₂O₂ at 80°C (Solution 2). (a) The metal concentration in the solution relative to the original concentration as a function of time. (b) The current passed though the circuit as a function of time.

(a)

(b)